tps evaluating for ii issues

[dave]

So I put 45 miles on the CB yesterday running errands, (30 miles on the freeway, 15 miles around town) hoping that I could make some progress diagnosing the idle problem. Before riding I rechecked the voltage at the TPS black/red connection with the bike off, sensor connected, and it measured .5 volts with the throttle closed, and it smoothly transitioned to 4.3 volts with the throttle wide open (it measured 4.4 volts with the throttle wide open the last time I measured it). I then checked the voltage with the engine started: .5 volts at idle (1,400 RPM cold), and a smooth increase as I twisted the throttle. I left the sewing needle plugged into the TPS connector, removed the battery cover (for quick access to the battery negative terminal), and packed my VOM in the trunk and set off. Unfortunately the low idle condition never occurred, and I did not make any additional measurements. I made four stops, where I turned the engine off, and probably over a dozen red lights, where the ide speed was a perfect 1,050 RPM each time. I am hoping the wife will agree to go for a ride today where we can rack up some good miles, and I will bring the VOM along (the sewing needle is still plugged into the TPS connection. I’ll make the measurements suggested by peterbaron also. Thanks for all your help guys.